CVE-2026-72763

n8n before 1.123.67 Credential Exfiltration via Sub-Workflow

State: Published
Severity: 7.2 High
Published: Aug 11, 2026
Updated: Oct 29, 2026
Reserved: Aug 10, 2026

Description

n8n before 1.123.67, 2.31.5, and 2.32.1 validates credential-access only for a node's top-level credentials and not for credentials referenced inside an Execute Sub-workflow node's inline workflow JSON. A member with Editor access to a shared workflow (when workflow sharing is enabled) who knows a target credential's ID can reference that credential in the inline JSON; it passes save-time and runtime validation and resolves in the parent workflow's project context, allowing the attacker to use or exfiltrate credentials they are not permitted to access.

Scores

CVSS	Score	Vector	Source
4.0	7.2 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:L	VulnCheck

Weaknesses

CWE-639 Authorization Bypass Through User-Controlled Key

Affected Products

Product	Versions
n8nn8n-io	before 1.123.67Affected 1.123.67Not affected
n8nn8n-io	2.32.0 to before 2.32.1Affected 2.32.1Not affected
n8nn8n-io	2.0.0-rc.0 to before 2.31.5Affected 2.31.5Not affected

References

GitHub Security Advisory (GHSA-cj9h-qx8g-pq2g)vendor-advisory
VulnCheck Advisory: n8n before 1.123.67 Credential Exfiltration via Sub-Workflowthird-party-advisory

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